Iowa /
Green Valley Lake
Reservoir in Iowa · 338 acres · near Creston
Green Valley Lake has 5 boat ramps listed as public.
Past algal blooms
Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2015, 2017 to 2019, 2021, 2023 and 2025.
state reports compiled by U.S. EPA · checked October 18, 2026
Depth contours in feet from Iowa DNR; deepest point about 22 ft. Lake levels and bottoms change; not for navigation.
Launches
- Green Valley Lake Boat Launch near Creston · Boat ramp · near Creston
- Green Valley Lake Boat Launch near Creston · Boat ramp · near Creston
- Green Valley Lake Boat Launch near Creston · Boat ramp · near Creston
- Green Valley Lake Boat Launch near Creston · Boat ramp · near Creston
- Green Valley Lake Boat Launch near Creston · Boat ramp · near Creston
Community
Where people who fish, boat and paddle Green Valley Lake talk about it. Lake associations, clubs and local groups will be added as we find them.